Short answer: the SVS PB-1000 PRO is the proven choice, measured and ranked among subwoofers, while the newer KRK S12.4 has no independent measurements yet and can only be compared on specs.
The case for the KRK S12.4: A 12-inch Kevlar woofer in a reinforced MDF cabinet with a front-firing port, driven by a 220W Class-D amplifier.
On the SVS PB-1000 PRO side: Ported 12-inch with 325W RMS delivers guttural low extension to 17Hz.
On paper: The SVS PB-1000 PRO has more amplifier power, 325W against 220W.
Price: the KRK S12.4 lists at $839 and the SVS PB-1000 PRO at $849.
Buy the SVS PB-1000 PRO if you want a speaker whose sound quality has been measured and ranked. It also has more power.
Buy the KRK S12.4 if you prefer its design or features, and you can wait for measurements to confirm how it sounds.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| KRK S12.4 | SVS PB-1000 PRO | |
|---|---|---|
| Price | $839.00 | $849.00 |
| Ranked | - | #37 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | ported, front | ported, front |
| Drivers | 12” Kevlar driver | 12” (305mm) driver with ported design |
| Amplifier Power | 220W | 325W RMS |
| Country | United States | United States |
| Output SPL at 15 Hz | - | 96.0 dB |
| Output SPL at 20 Hz | - | 104.2 dB |
| Output SPL at 25 Hz | - | 110.3 dB |
| Output SPL at 31.5 Hz | - | 110.7 dB |
| Output SPL at 40 Hz | - | 113.6 dB |
| Output SPL at 50 Hz | - | 116.1 dB |
| Output SPL at 63 Hz | - | 117.4 dB |
| Output SPL at 80 Hz | - | 116.6 dB |
| Output SPL at 100 Hz | - | 115.9 dB |
| Output SPL at 125 Hz | - | 115.3 dB |
| CEA-2010-A Average (40-80Hz) | - | 115.9 dB |
| Dimensions | - | 18.9”H x 15”W x 20”D (480.1 x 381.0 x 508.0 mm) |
| Weight | - | 42.5 lbs (19.3 kg) |
| Warranty | - | 5 |
| Cabinet Color | - | black |
| Measurement Source | - | Audioholics |
| Frequency Response | - | 17-260Hz, ±3dB |
Prices on this page were last checked September 29, 2026 at 3:43 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
KRK S12.4: $839.00 Amazon eBay
Older model: the KRK Systems 12S (rated 3.9/5).
Pros: A 12-inch Kevlar woofer in a reinforced MDF cabinet with a front-firing port, driven by a 220W Class-D amplifier. A four-position selectable crossover matches it to existing studio monitors, and the included bypass footswitch mutes the sub and sends full-range audio to the monitors for mix checks.
Cons: No independent measurements yet, so its output can’t be compared with ranked subwoofers. It is built as a studio monitor partner, so its controls suit a desk setup more than a home theater receiver.
Full KRK S12.4 review and specifications →
| Amplifier Power | 220W |
|---|---|
| Country | United States |
| Drivers | 12” Kevlar driver |
| Enclosure | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
SVS PB-1000 PRO: $849.00 Amazon eBay
Older models: the SVS PB12-NSD (ranked lower, rated 3.7/5) and the SVS PB-1000 (ranked lower, rated 3.6/5).
Pros: Ported 12-inch with 325W RMS delivers guttural low extension to 17Hz. Shakes things up like pricier competitors at 1/3 cost. Dual high-grade ferrite magnets with FEA-optimized motor. SVS app control.
Full SVS PB-1000 PRO review and specifications →
| Amplifier Power | 325W RMS |
|---|---|
| CEA-2010-A Average (40-80Hz) | 115.9 dB |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 18.9”H x 15”W x 20”D (480.1 x 381.0 x 508.0 mm) |
| Drivers | 12” (305mm) driver with ported design |
| Enclosure | ported, front |
| Frequency Response | 17-260Hz, ±3dB |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 96.0 dB |
| Output SPL at 20 Hz | 104.2 dB |
| Output SPL at 25 Hz | 110.3 dB |
| Output SPL at 31.5 Hz | 110.7 dB |
| Output SPL at 40 Hz | 113.6 dB |
| Output SPL at 50 Hz | 116.1 dB |
| Output SPL at 63 Hz | 117.4 dB |
| Output SPL at 80 Hz | 116.6 dB |
| Output SPL at 100 Hz | 115.9 dB |
| Output SPL at 125 Hz | 115.3 dB |
| Warranty | 5 |
| Weight | 42.5 lbs (19.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
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- SVS PB-1000 PRO vs SVS SB-3000
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- See all 18 comparisons